Thursday, June 11, 2009

ICP - Cyclonic Spray Chamber

popular type of spray chamber utilizes a cyclonic design. Instead of using two compartments as with the Scott-type spray chambers, this device uses a tangential rotary flow path in a single circular compartment.
The centrifugal force of the aerosol, as it ascribes a circular path in the spray chamber, results in the larger droplets being forced to the outside where they collide with the wall.
The smaller diameter droplets are swept through the spray chamber and exit to the plasma. Usually the internal volume of cyclonic spray chambers is small (20—40 mL), reducing the washout time by a factor of 2-3.
The use of a cyclonic-type of spray chamber benefits the analyst from the point of view of a simple design and ease of operation.
The nature of the operation of these spray chambers is that only a small percentage (<10%)>
The bulk of the sample is diverted to waste. Therefore, when limited sample is available, special modifications or techniques are required for accurate and sensitive analysis.

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